engine knocking on 1995 Ford Taurus

My engine is knocking only put the car in reverse and turn the wheel right, then it is fine when i drive down the street,..i had a guy look at it and he says the whole motor moves when he steps on the gas. Could it be only 1 or more of the motor mounts out or a CV joint or is it the whole motor? Thanks in advance.

If the motor is moving excessively then you may have a broken mount. Have them all checked, it may be one is broken nut the others are probably in need of replacement as well. CV joints will normally make a noise when turning and moving forward or backwards.